Hertel H59870113 Indexable Boring Bar 0.438 in Right Hand

Product Description

The HERTEL H59870113 is a solid carbide indexable boring bar designed for precision internal turning and boring operations on CNC lathes and machining centers. Built to the HBBQ toolholder style, it features a 3/8 inch shank diameter and a 6 inch overall length. The minimum bore diameter is 0.438 inches, with a maximum bore depth of 3.75 inches. Inserts are secured via a screw-holding method, which provides rigid clamping and repeatable insert indexing. Coolant-through capability helps clear chips and extend insert life during deep-bore operations. This bar is intended for use by machinists and toolroom professionals working in production or job-shop environments.

This boring bar is suited for small-diameter internal boring applications in both ferrous and non-ferrous materials, depending on insert selection. The right-hand cut orientation is standard for conventional lathe setups where the tool moves toward the headstock. The HBBQ style geometry accommodates TPC insert series, giving the operator flexibility in choosing insert grades and chipbreaker profiles for the application. It is a single-purpose tool and is not configured as a multi-use holder.

Key Features

• Solid carbide construction for rigidity and vibration damping in small-bore applications
• Minimum bore diameter of 0.438 inches for tight-clearance internal operations
• Maximum bore depth of 3.75 inches for extended reach without chatter
• Coolant-through design flushes chips and reduces heat at the cutting zone
• Screw insert clamping for secure, repeatable indexing of TPC series inserts
• Right-hand cut, HBBQ toolholder style, 3/8 inch shank diameter

Compatibility

Designed to accept TPC series indexable inserts. Verify insert grade and chipbreaker selection against your workpiece material and cutting parameters before use.

Installation Notes

Installation and setup should be performed by a qualified machinist familiar with boring bar toolholding systems. Ensure the machine spindle and turret are fully stopped and the control is in a safe state before mounting or adjusting the bar. Use the appropriate torque driver when seating the insert clamping screw to avoid stripping threads. Confirm shank runout and overhang length meet your machine's boring bar holding specification before starting a cut.